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1 CC-Link SYSTEM
1.2 Overview of Communication
The overview of CC-Link communication is described below.
(1) Remote I/O station communication
The remote I/O station is a remote station that handles bit data only.
The ON/OFF information of a switch or indicator lamp is sent or received using
the remote input RX and remote output RY (refer to Section 8.1.1).
Input
Output
X
Y
Master station
Programmable
controller CPU
Automatic refresh
Automatic refresh
Remote input
RX
Remote output
RY
Link scan
Link scan
Remote I/O station
(2) Remote device station communication
The remote device station is a remote station that handles bit and word data.
Signals for handshaking with the remote device station (initial request, error
occurred flag, etc.) are communicated using the remote input RX and remote
output RY. The setting data to the remote device station are communicated using
remote registers RWw and RWr (refer to Section 8.1.2).
X
Y
W
W
Master station
Voltmeter
Programmable
controller CPU
Automatic refresh
Remote device station
Link scan
Link scan
Link scan
Link scan
Remote
input
(RX)
Remote
output
(RY)
Remote
register
(RWw)
Remote
register
(RWr)
Remote
input
(RX)
Remote
output
(RY)
Remote
register
(RWw)
Remote
register
(RWr)
Automatic refresh
Automatic refresh
Automatic refresh
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Summary of Contents for L26CPU-BT
Page 1: ......
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Page 32: ...3 5 3 5 3 SPECIFICATIONS ...
Page 51: ...4 2 4 2 4 PROCEDURE BEFORE OPERATION 4 ...
Page 61: ...6 4 6 4 6 INSTALLATION AND CONNECTION ...
Page 63: ...6 6 6 6 6 INSTALLATION AND CONNECTION 8 The connection method is shown below ...
Page 70: ...6 13 6 13 6 INSTALLATION AND CONNECTION ...
Page 72: ...6 15 6 15 6 INSTALLATION AND CONNECTION ...
Page 139: ...8 33 8 33 8 FUNCTIONS ...
Page 151: ...8 45 8 45 8 FUNCTIONS ...
Page 246: ...11 9 11 9 11 EXAMPLE OF COMMUNICATION BETWEEN THE MASTER STATION AND REMOTE DEVICE STATIONS ...
Page 311: ...13 2 13 2 13 COMMUNICATION BETWEEN THE MASTER STATION AND INTELLIGENT DEVICE STATIONS MEMO 13 ...
Page 321: ...14 10 14 10 14 EXAMPLE OF COMMUNICATION WHEN MOUNTING MODULES ON THE HEAD MODULE ...
Page 326: ...15 5 15 5 15 TROUBLESHOOTING To the next page ...
Page 327: ...15 6 15 6 15 TROUBLESHOOTING To the next page ...
Page 328: ...15 7 15 7 15 TROUBLESHOOTING ...
Page 329: ...15 8 15 8 15 TROUBLESHOOTING 2 Troubleshooting by status logging ...
Page 436: ...App 72 App 72 APPENDIXES 7 Operating procedure of the transmission speed test ...
Page 439: ...App 75 App 75 APPENDIXES MEMO ...
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